Grease-trap.



W. S. MILLS.

GREASE TRAP APPLICATION FILED MAR. 9, 19m.

1,270,648. Patented June 25, 1918.

NITED STATES PATENT OFFICE.

WILLIAM S. MILLS, OF FLORENCE, SOUTH CAROLINA.

GREASE-TRAP.

To all whom it may concern Be it known that WILLIAM S. MILLS, a citizen of the United States, residing at Florence, in the county of Florence and State of South Carolina, has inventedcertain new Q and useful Improvements in Grease-Traps, of which the following is a specification, reference being had to the accompanying "drawings,

This invention relates to traps, and par- Igticularly to traps for catching and separating grease from water or other liquids drain- ;ing from a sink.

from the sink.

A further object is to provide a construction of this kind including an outer body or casing which is intended to be permanently connected to the waste pipe of the sink and the waste pipe leading the sewer or other point of discharge, and to provide an interior strainer removable from the outer body'or casing.

" Still another object is to provide a strainer as referred to with means whereby it may be readily taken apart for cleaning, and furstrainer may be held in proper position withther "provide means whereby the interior in the outer casing or body so that the waste from thecasing or body.

. 1 strainer,

pipe may discharge thereinto.

Still another object is to so construct the grease trap that the strainer may be readily "removed, leaving the outer body or casing open for cleaning and to permit the strainer to be cleansed. jStill another object is to provide an auxil- 40 iary strainer disposed at the junction of the outer body. or casing with the waste pipe leading tothe sewer so as to catch any grease whichmay by any chance escape the main body of the trap, and provide means whereby this auxiliary strainer may be removed Other objects will appear in the source of description.

panying drawings, wherein t Figure 1 is a longitudinal sectional view ofv my improved grease trap;

Fig. 2 is a perspective view of the upper portion of the strainer; and j Fig. 3 is a vertical'section of the auxiliary Specification of Letters Patent.

Apulication'flled March 9, 1918. Serial No. 221,539.

Referring to these drawings, 10 designates the body of the trap, which is made of sheet metal or other suitable material, this body, for the greater portion of its length, being uniformly tapered from one end to the other, the smaller end of the body being closed by a wall 11 and having leading therefrom a tubular connection 12 which may lead to the sewer or other point of discharge. The opposite end of the hollow tapering body or casing is downwardly flanged as at 13 and then continued to provide an annular wall 14, which is screw-threaded for engagement by the screw-threaded flange of a cover 15. A waste pipe 16 leading from the sink enters the casing 10 adjacent the flange 13 at one point.

Removably disposed within the casin 10 is a grease strainer or catcher, whic 1 is formed in two parts. One of these sections or parts comprises a tapering annular member 17 of imperforate metal, having an elongated opening 18 at one point therein. The other section 19 is formed of wire gauze or like material and constitutes practically a tapering pocket closed at its lower end and provided with a handle 20. The gauze section 19 is connected to the section 17 by a screw-threaded union or joint 21 formed in any suitable manner as by providing a metallie band at the large end of the section 19 having screw-threads which will engage screw-threads in the section 17.

At'its upper end the section 17 isformed with a flange 22, which is provided with notches 23 engageable with lugs 21 projecting upward from the flange 13. These notches'and lugs are so arranged that when the lugs are engaged in the notches 23 the opening 18 will be disposed immediately beneath the waste pipe 16, thus preventing such positioning of the strainer within the casing 10 that the waste pipe 16 will be out of line with the opening 18. A cover 25 detachably engages the large end of the member 17, the cover being provided with a suitable handle.

The small end of the casing 10, as before stated, engages with the waste pipe 12 and at the junction of the waste pipe with the casing 10 or body I provide an auxiliary strainer 26 which is approximately hemispherical in form and formed of wire gauze, this strainer being mounted upon a rod 27 carrying at its upper end a plug 28 which has screw-threaded engagement with the wall of the casing 10 and which is provided with a handle (Elle strai e -may be. h ld upon the rod 27 by reducing the extremity of the rod and screw-threading it forthe" 116- the two partsof the straiiie'r'a re removable fromeachoth'err I v, 1

' By the use'or'in inventionfprovision is made for trapping or catchingthe'gi'ease whichmay pass through the ,Waste'fpipeQsO that the grease will not clog the pipes leading to the sewer, which is very lia hle' to happenfand furthermorethis does away with the necessity of 'ClGaIllIig' these waste pipes iw ienltliy become clogged, which 'isia' very disagreeable job. Again by reason fof the fact that the body 10 is inelin' ed downward and toward the "waste pipe 12, fall liquids passing intofthe' trap: will flow gravity into the wa'stefpipe' and will not 'collect in the trap. Where water. or. other liquids collectf'wit'hin the trap, the liquid is very liable I to freeze thus bursting the. trap T or preventingthe free flow of the same. Inasmuch as the opening l ris relatively *large, in relation to the waste pip 1:6,'it Will be obvious tharuierewiu belno chance for water topass' dciv rfn ex teriorly ofthe strainer. 1

e Preferably I form: the Waste "vide'a' trapl3l by blinding t i f 1 9' War ,"a d' zw i rei i 'f i v id i d drain -cock '32 is disposed in the trap formed. This trap iwillact to ietainqjsuffioient clearfwater in-the outlet'vpipe I2ffas "to; prevent gases p assirig back from the sewer, this beingrequi'r'ed sani- 50 tary regulations. opening the drainpeek 32 the water withinI the trap can'lbe withdrawnlto thus prevent freezing-pf themterin cold weather. l l o p r While: 'I have illustrated T a. form 4 iofj 'ifiy inveiition which I "have found horoughly effective practiceand which? y-loeT-iiia'de tihn'aiid arra gemen ?oisaitgfwit am a J l ting: spirit -the, iiivehtiohJaS defined in the appended claims ,5

-11 'vin described m I verifies, era 'fI claim is:

1. A grease of thecharfiiter de- 'scriloed, comprising an exterior imperforate casing closed; at one endiand having a cover at the other end and having an inlet opening tadjacent the last named end of the cats ing and an outlet opening adjacent the other wend of-thecasing, and a grease strainerhaving an imperforate portion formed with an opening adapted to register with the inlet opening of the casingand with a wire gauze portion, the straiiierffitting the interior of the casing.

2. A grease "trap I of the character described, including an outer icz'isingpt-a1 3r6jd longitudinally and downwardly incllned,

and closedat its smallerfl end, afcover closing the upper endfof the casing, "an out let pipe leading from thesmall endofith'e casing, aninlet pipeleading into theside of the casing adjacent the large" end thereof,

and a strainer disposed within and fitting the casing having'aln imperforatef'portion provided with an opening Yadapted to rage- ,tjer with' the opening the Waste pipeand "having, a portion formed or wire gauze.

.3. 'A f'greia'se trap of thef character/ described "comprisifig "a tapered outer casing having an outlet at its small end, a cover erasing the large end of the "as'i iig f the' easing beingf 'f'o'rmecliw'ithTan inlet the 1 cover, a strainer removably "dis es'ed d'tif within and fit'tiri'g the casin nd havi'rfg an elongated opening dapted to register, with the inlet opening of' the fca'sin'gfjand me-mas permittingthe removal of thej' caisingjbut' hold ng the cas ng); fromcrotation and'jwith "its inlet sem fi registering with'the inlet opening offthecasing. ,r l j r A. 'grea'se, 'tr j f, the cliarficter "described cdmprisiiig a tapered outer'fcasuig having' 'an outlet 'at itsjsinall end, 1a fcov'r easing the large of the Casing; the fcisng be ng f orinetllw'ith'faninlet inward of the. cover, "a 'straiiier 'reinolvablyj'd within jand fitting. the casing and, he fig tan 'eloiigat'e'd opening adapted '1 to frgistr with the inlet "opening of "the @cas'iiigflafid means permitt ng the removal ofthe casihg but "holding the casing fibm semen "a dwith its inltgoperfingregistering 'j inlet 'openin 'of the casingaiidi acovr fie "ting ithihthei inlet end ofthestiai-fier; r

. 15. A gre se map or the C ara-erase scribed comprising I a aewnwardiy "incliiie'd osed V casing tapering toward its "ldwer end; and

formedat its lower'end viithianoutl' et pipe, the upper end of the casingbeihgfflaiiged randithen extended ;,upward and having a enifarmuitmatr andbeing srew-threaded,

a olosure' for the "soraw-ti;iearlier"611013516 the casing; an inlet waste "p peepeni g m the casing below. the fifian'ge thereof, and strainer disposed withn the 'casihg "compris r e-a o ic dy 6 i Y i i nular"imperferate"h'ody"having""detac able engagement-with the wire gauze bodfi said imperforate portion being formed with a longitudinally extending inlet opening adapted when the strainer is in place to register with the inlet opening of the casing, said imperforate portion of the strainer being provided with a flange fitting within the flanged portion of the casing, the flange and easing being formed with means permitting the removal of the strainer from the casing but permitting the rotational movement of the strainer.

6. A grease trap of the character described comprising a tapered casing having an outlet extending adjacent its small end,

the small end of the casing being closed, a 15 strainer seating in the outlet pipe at its junction with the casing, a plug having screw-threaded engagement with the Wall of the casing diametrically opposite the outlet pipe, and a rod extending from said plug 20 and connected to the strainer.

In testimony whereof I hereunto afiix my signature in the presence of two witnesses.

WILLIAM S. MILLS.

Witnesses:

E. P. STANTON, C. J. GABQUE.

Copies of this patent may be obtained for five cents each, by addressing the Commissioner of Patents,

Washington, D. G. 

